import Vue from 'vue'
import axios from 'axios'
import router from '@/router'
import qs from 'qs'
import merge from 'lodash/merge'
import {clearLoginInfo} from '@/utils'
import {Message} from 'element-ui'

const http = axios.create({
    timeout: 1000 * 30,
    withCredentials: true,
    headers: {
        'Content-Type': 'application/json; charset=utf-8'
    }
})

/**
 * 请求拦截
 */
http.interceptors.request.use(config => {
    config.headers['Authorization'] = Vue.cookie.get('Authorization') // 请求头带上token
    return config
}, error => {
    return Promise.reject(error)
})

/**
 * 响应拦截
 */
http.interceptors.response.use(response => {
    const res = response.data
    // 00000 请求成功
    if (res.code === '00000') {
        return res
    }
    // A00001 用于直接显示提示用户的错误,内容由输入决定
    if (res.code === 'A00001') {
        Message({
            message: res.msg || 'Error',
            type: 'error',
            duration: 1.5 * 1000
        })
        return Promise.reject(res)
    }
    // A00002 用于直接显示提示系统的成功,内容由输入决定
    if (res.code === 'A00002') {
        Message({
            message: res.msg,
            type: 'success',
            duration: 1.5 * 1000
        })
    }

    // A00004 未授权
    if (res.code === 'A00004') {
        clearLoginInfo()
        router.push({name: 'login'})
    }

    // A00005 服务器异常
    if (res.code === 'A00005') {
        console.error('============== 请求异常 ==============')
        console.log('接口地址: ', response.config.url.replace(process.env.VUE_APP_BASE_API, ''))
        console.log('异常信息: ', res)
        console.error('============== 请求异常 end ==========')
        Message({
            message: '服务器出了点小差，请稍后再试',
            type: 'error',
            duration: 1.5 * 1000,
            customClass: 'element-error-message-zindex'
        })
        return Promise.reject(res)
    }
    if (res.code === 'A00014') {
        Message({
            message: res.msg,
            type: 'error',
            duration: 1.5 * 1000
        })
        return Promise.reject(res)
    }
}, error => {
    switch (error.response.status) {
        case 400:
            Message({
                message: error.response.data,
                type: 'error',
                duration: 1500,
                customClass: 'element-error-message-zindex'
            })
            break
        case 401:
            clearLoginInfo()
            router.push({name: 'login'})
            break
        case 405:
            Message({
                message: 'http请求方式有误',
                type: 'error',
                duration: 1500,
                customClass: 'element-error-message-zindex'
            })
            break
        case 500:
            Message({
                message: '服务器出了点小差，请稍后再试',
                type: 'error',
                duration: 1500,
                customClass: 'element-error-message-zindex'
            })
            break
        case 501:
            Message({
                message: '服务器不支持当前请求所需要的某个功能',
                type: 'error',
                duration: 1500,
                customClass: 'element-error-message-zindex'
            })
            break
    }
    return Promise.reject(error)
})

/**
 * 请求地址处理
 * @param {*} actionName action方法名称
 */
http.adornUrl = (actionName) => {
    // 非生产环境 && 开启代理, 接口前缀统一使用[/proxyApi/]前缀做代理拦截!
    return (process.env.NODE_ENV !== 'production' && process.env.OPEN_PROXY ? '/proxyApi' : process.env.VUE_APP_BASE_API) + actionName
}

/**
 * get请求参数处理
 * @param {*} params 参数对象
 * @param {*} openDefultParams 是否开启默认参数?
 */
http.adornParams = (params = {}, openDefultParams = true) => {
    var defaults = {
        't': new Date().getTime()
    }
    return openDefultParams ? merge(defaults, params) : params
}

/**
 * post请求数据处理
 * @param {*} data 数据对象
 * @param {*} openDefultdata 是否开启默认数据?
 * @param {*} contentType 数据格式
 *  json: 'application/json; charset=utf-8'
 *  form: 'application/x-www-form-urlencoded; charset=utf-8'
 */
http.adornData = (data = {}, openDefultdata = true, contentType = 'json') => {
    var defaults = {
        't': new Date().getTime()
    }
    data = openDefultdata ? merge(defaults, data) : data
    return contentType === 'json' ? JSON.stringify(data) : qs.stringify(data)
}

export default http
